在下列各句的每个空格内填上一个适当的、完整的单词，该词的首字母已给出。

1. Several students are away from school because of i_____.

2. England and France are both E_____ countries.

3. Are you for or a_____ the plan?

4. The more careful you are, the fewer m_____ you'll make.

5. They are l_____ for Paris tomorrow.

不适用于局域网的拓扑结构是

A．星形拓扑

B．网状形拓扑

C．总线形拓扑

D．环形拓扑